Easy-to-mold high-impact-resistant spraying-free polypropylene material and preparation method thereof

Abstract

The invention discloses an easy-to-mold high-impact-resistant spraying-free polypropylene material. The formula comprises the following components by weight: 60-70 parts of polypropylene, 15-25 partsof superfine activated talcum powder, 2-4 parts of silicon-based aluminum powder master batch, 1-2 parts of glass-based pearl powder, 1-2 parts of a hyperbranched flowing agent, 2-4 parts of siliconemaster batch, 4-6 parts of a compatilizer, 0.5 part of an antioxidant and 0.5 part of an anti-ultraviolet additive. According to the invention, the defects in the prior art are overcome, the materialof a traditional paint spraying piece is replaced, the injection molding defects of weld lines, crazes and the like in the production process of the spraying-free material can be solved, and good impact performance can be maintained and the rejection rate is reduced on the basis of ensuring good flowability, so that the cost is greatly saved, and the production benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of automotive plastic interior and exterior trim materials, and more specifically relates to an easy-to-form, high-impact, spray-free polypropylene material and a preparation method thereof. Background technique [0002] With the improvement of people's quality of life, cars have become the preferred means of transportation for people to travel, and with the increase in car sales, people have a higher aesthetic for the appearance of cars, and the use of high-gloss plastic parts can instantly attract people. eyeball. The traditional method of achieving high-gloss plastic paper parts is through surface painting, which is easy to cause pollution, the process is harmful to the human body, and is not conducive to recycling. [0003] Spray-free materials have been gradually developed in recent years, and the amount used in the automotive field is also increasing. Compared with traditional processes, it eliminates...

AI Technical Summary

Problems solved by technology

At present, the factors that affect the mass application of spray-free materials are not only the factors of the injection mold, but also the welding line is easy to be generated when the material itself is formed, and the appearance is also the most difficult problem to solve at present.

[0004] The current spray-free materials mainly achieve the corresponding metallic or pearlescent effect by adding metallic pigments, pearlescent pigments, etc., but due to the poor compatibility of these pigments with polypropylene resin, if the formula design is not appropriate, the fluidity does not match, it is very difficult It is easy to have silver wires on the surface of the product during the injection molding process, weld lines and serious decline in impact performance, which affect the appearance and performance of the product and lose its practicability